This breathtaking loop begins by transforming The Legend of Kuruk into its creature side, Avatar Kuruk, whose powerful Waterbend exhaust ability allows you to pay twenty mana—discounted heavily by tapping your other artifacts and creatures—to take an extra turn. To bypass the once-per-game restriction on that exhaust ability, you bring in Sakashima of a Thousand Faces to enter as a copy of Avatar Kuruk, cleanly dodging the legend rule thanks to Sakashima's own static ability. Finally, Airbender Ascension accumulates quest counters whenever your creatures enter and reliably blinks Sakashima during your end step, resetting its identity so that each new turn grants you a fresh Avatar Kuruk ready to waterbend all over again.